There is no functional difference between the statement "democracy is subverted by a grand corporate conspiracy" and "our elections are invalid", because the only way the former happens is if the latter happens. If the latter didn't happen, then you're just upset about the outcome of a legitimate election. Which is a fair thing to be in a democracy, but it does not mean that the whole system is corrupt. Insistence that any other outcome than your preferred outcome is illegitimate is dictator behavior